More than 30 years ago, eruptions of steam and ash from Mount Baker prompted the evacuation of the Baker Lake area and sent jitters through Whatcom County. Before scientists could understand what was going on inside Baker, its sister to the south Mount St. Helens roared to life, stealing the show and their attention. Now geologists at Western Washington University are leading the effort to find out what's been percolating beneath the volcano's surface since its headline-grabbing antics in 1975.